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Finding the Fourth Proportional to 343,448.53, 512,671.19 and 318,121.93

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Solution

The fourth proportional to 343,448.53, 512,671.19 and 318,121.93 is: 474,865.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,448.53 : 512,671.19 = 318,121.93 : x
  2. Step 2: Convert to fraction form
    343,448.53/512,671.19 = 318,121.93/x
  3. Step 3: Cross multiply
    343,448.53x = 512,671.19 × 318,121.93
  4. Step 4: Simplify right side
    343,448.53x = 163,091,945,545.91
  5. Step 5: Solve for x
    x = 163,091,945,545.91/343,448.53
  6. Step 6: Final answer
    x = 474,865.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.